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# SPDX-License-Identifier: GPL-2.0+
#
# Copyright (c) 2011 The Chromium OS Authors.
# This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is
# enabled. See doc/README.fdt-control for more details.
DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%)
ifeq ($(DEVICE_TREE),)
DEVICE_TREE := unset
endif
ifneq ($(EXT_DTB),)
DTB := $(EXT_DTB)
else
DTB := arch/$(ARCH)/dts/$(DEVICE_TREE).dtb
endif
$(obj)/dt-$(SPL_NAME).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE
mkdir -p $(dir $@)
$(call if_changed,fdtgrep)
ifeq ($(CONFIG_OF_DTB_PROPS_REMOVE),y)
$(obj)/dt.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
$(call if_changed,fdt_rm_props)
else
$(obj)/dt.dtb: $(DTB) FORCE
$(call if_changed,shipped)
endif
targets += dt.dtb
$(DTB): arch-dtbs
$(Q)test -e $@ || ( \
echo >&2; \
echo >&2 "Device Tree Source ($@) is not correctly specified."; \
echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"; \
echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument"; \
echo >&2; \
/bin/false)
PHONY += arch-dtbs
arch-dtbs:
$(Q)$(MAKE) $(build)=arch/$(ARCH)/dts dtbs
ifeq ($(CONFIG_SPL_BUILD),y)
obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o
# support "out-of-tree" build for dtb-spl
$(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE
$(call if_changed_dep,as_o_S)
else
obj-$(CONFIG_OF_EMBED) := dt.dtb.o
endif
# Target for U-Boot proper
dtbs: $(obj)/dt.dtb
@:
# Target for SPL/TPL
spl_dtbs: $(obj)/dt-$(SPL_NAME).dtb
@:
clean-files := dt.dtb.S
# Let clean descend into dts directories
subdir- += ../arch/arc/dts ../arch/arm/dts ../arch/m68k/dts ../arch/microblaze/dts \
../arch/mips/dts ../arch/nios2/dts ../arch/powerpc/dts ../arch/riscv/dts \
../arch/sandbox/dts ../arch/sh/dts ../arch/x86/dts ../arch/xtensa/dts
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